Colin R. Harbke

Direct and Indirect Effects of Birth Order on Personality and Identity: Support for the Null Hypothesis

The authors proposed that birth order affects psychosocial outcomes through differential investment from parent to child and differences in the degree of identification from child to parent. The authors conducted this study to test these 2 models. Despite the use of statistical and methodological procedures to increase sensitivity and reduce error, the authors did not find support for the models. They discuss results in the context of the mixed-research findings regarding birth order and suggest further research on the proposed developmental dynamics that may produce birth-order effects.

An Electrophysiological Investigation of the Effects of Social Rejection on Self Control

ABSTRACT Previous studies have shown that social rejection leads to impaired performance on a variety of tasks that require self control, including the Stroop color-word interference task; however, mechanisms underlying the effect remain to be elucidated. We attempted to clarify the effects of social rejection on self control resources by measuring event-related potentials (ERPs) during a computerized Stroop test. Stroop performance and ERPs from 54 participants in rejected, control, and accepted groups were analyzed. A significant difference in the pattern of results for the N450 ERP was found, with rejected participants showing less negativity on incongruent trials and more on congruent trials compared to accepted participants and controls. The results suggest social rejection reduces the engagement of cognitive control mechanisms, and are more consistent with a limited strength resource model than with limited capacity resource models that focus on limitations in attention.

Evaluating a Brief Scale Measuring Psychological Climate for Sexual Harassment

We evaluated the measurement properties of the psychological climate for sexual harassment (PCSH) questionnaire with data from women officers (n = 311) in the Swedish Armed Forces. Confirmatory factor analyses indicated that a two-factor solution assessing risks and seriousness/actions associated with sexual harassment episodes described the underlying pattern of correlations among items. Correlational and regression analyses showed that ratings of perceived intolerance for sexual harassment were associated with high ratings of job satisfaction, organizational commitment, and (positive) mental health; and decreased ratings of psychological distress. We discuss the theoretical, methodological, and practical implications of our findings for future research.

Sexual willingness with same- and other-sex prospective partners: Experimental evidence from the bar scene

ABSTRACT Sex is ubiquitous in the media, but only a fraction depicts sexual interactions between same-sex partners. This field study, conducted outside of bars in the Midwestern United States, examined 83 heterosexuals’ sexual willingness with a same- or other-sex partner. Participants viewed a randomly assigned video vignette of a same- or other-sex partner. Alcohol intake, partner attractiveness, and sexual willingness were measured. Using moderated regression analysis, we found that alcohol intake predicted sexual willingness with the male target for both men and women, but not with the female target. The attractiveness of same-sex partners was related to sexual willingness. Sexual willingness was only influenced by alcohol intake and perceived attractiveness of a same-sex prospective partner. Most notably, alcohol intake was related to increased sexual willingness of men with a same-sex partner, suggesting a potential shift in normative casual sexual behavior among heterosexual men.

Beneficial but not sufficient: effects of condom packaging instructions on condom use skills

Among those who are sexually active, condom use is the only method of protection against HIV/AIDS. Poor condom skills may lead to condom use failures, which can lead to risk of exposure. Despite the wide availability of condom use instructional leaflets, it is unclear whether these instructions sufficiently teach condom use skills. Ninety-two male and 113 female undergraduates were randomly assigned to a control condition (read non-condom instructions) or a treatment condition (read condom instructions). Participants completed self-report measures related to condom use and performed a condom demonstration task. Participants who read the condom instructions did not perform significantly better on the demonstration task, F (1, 203) = 2.90, P = 0.09, η2 = 0.014. At the item level, those who read the condom instructions better performed two of the seven condom use steps correctly. These data suggest that condom packaging instructions do not effectively teach condom use skills.

Use of Contract Grading to Improve Grades Among College Freshmen in Introductory Psychology

The use of behavioral techniques in college teaching has declined during the past three decades. The purpose of this study was to compare a behaviorally based grading approach with a traditional point-based system. A total of 40 college freshmen were randomly assigned to a Traditionally Graded or Contract Graded Introductory Psychology course. Contract graded students were one third as likely to fail or withdraw, 3 times more likely to earn an A grade, and were more likely to perceive a high degree of control over their grade. These findings support use of a contract grading system in the contemporary college classroom.

Generalized Expectancies for Negative Mood Regulation Among Youth in Grades 4 to 8

Negative mood regulation expectancies (NMRE) represent people’s beliefs that they can use behaviors and cognitions to alleviate unpleasant emotional states. The relationship between NMRE and measures of affect, coping, depression, and anxiety with youth in Grades 4 through 8 (N = 539) was examined. In hierarchical regressions, scores on an NMRE scale predicted depression, but not anxiety, independent of positive affect, negative affect, adaptive coping, and avoidant coping. Results were consistent with those found with college students and adults, suggesting the NMRE construct can add to our understanding of how youth deal with negative moods. Assessing NMRE in youth may help identify those at risk for developing affective symptoms, and provide a useful index of progress in therapeutic interventions.

Comparison of the Original and Short Form Drinking Motives Questionnaire–Revised With High School and Underage College Student Drinkers:

Cooper developed and provided initial support for the Drinking Motives Questionnaire–Revised (DMQ-R). More recently, Kuntsche and Kuntsche introduced the briefer DMQ-R SF. Psychometric properties of the DMQ-R and the DMQ-R SF were examined in samples of high school (n = 131) and underage college student drinkers (n = 189). The original and short-form versions of the DMQ-R were similar with regard to composite score validity, concurrent validity, and internal consistency. Only the Enhancement Motives subscale showed slight decrements in reliability and validity for the short form. Confirmatory factor analysis showed that the DMQ-R SF was associated with slightly better goodness-of-fit and invariant factor loadings between the high school and college student samples. Despite its briefer form and reduced task demands for participants, the DMQ-R SF appears to provide nearly equivalent, and in some instances slightly improved, measurement of drinking motives in underage drinkers as does the original DMQ-R.

Differences in drinking expectancies and motives for regular education and special education high school students with emotional/behavioral disorders

Alcohol expectancies and drinking motives were compared for regular education students (n = 159) and students with emotional/behavioral disorders (EBD) receiving special education services (n = 51). Differences existed between groups with respect to expected negative social consequences and emotional and physical outcomes associated with drinking. Across groups, drinkers reported more positive alcohol expectancies than non-drinkers, while non-drinkers reported more negative alcohol expectancies than drinkers. Differences also existed between the regular education and EBD students who drank with respect to coping, conformity, and social motives. Accounting for sample sizes differences, the relationship between alcohol use and negative physical effect was stronger for regular education students, while the relationship between alcohol use and conformity motives was stronger for the EBD group.

Vocational Interests and Needs of Unemployed, Low-Education Adults with Severe Substance Abuse Problems in Anchorage, Alaska

Vocational assessment data were collected from 94 low-education adults with severe substance abuse problems not currently in treatment. Participants completed the My Vocational Situation (MVS), Self-Directed Search (SDS), and Reading-Free Vocational Interest Inventory (R-FVII). Lower scores than the normative sample were revealed on all MVS scales, with scores for men being significantly lower than the normative sample. These findings indicate that these participants, particularly the men, lack a clear and stable view of their occupational future, need information to clarify their occupational options and goals, and perceive multiple barriers in attaining employment. SDS and R-FVII results provide detailed information about these participants’ occupational interests and vocational likes and dislikes. These findings highlight vocational counseling and guidance as critical needs for individuals with severe substance abuse problems who are unable or unwilling to seek treatment. Providing vocational services to this out-of-treatment population may be an essential pathway for their long-term recovery.